GB1167582A - Improvements in Electric Synchronous Motor Clocks - Google Patents

Improvements in Electric Synchronous Motor Clocks

Info

Publication number
GB1167582A
GB1167582A GB03/67A GB1367A GB1167582A GB 1167582 A GB1167582 A GB 1167582A GB 03/67 A GB03/67 A GB 03/67A GB 1367 A GB1367 A GB 1367A GB 1167582 A GB1167582 A GB 1167582A
Authority
GB
United Kingdom
Prior art keywords
motor
jan
clock
electric synchronous
synchronous motor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB03/67A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
General Electric Co
Original Assignee
General Electric Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by General Electric Co filed Critical General Electric Co
Publication of GB1167582A publication Critical patent/GB1167582A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F5/00—Apparatus for producing preselected time intervals for use as timing standards
    • G04F5/04—Apparatus for producing preselected time intervals for use as timing standards using oscillators with electromechanical resonators producing electric oscillations or timing pulses
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
    • G04C3/08—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork, e.g. electrostatically
    • G04C3/10—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork, e.g. electrostatically driven by electromagnetic means
    • G04C3/101—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork, e.g. electrostatically driven by electromagnetic means constructional details
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B17/00—Mechanisms for stabilising frequency
    • G04B17/04—Oscillators acting by spring tension
    • G04B17/10—Oscillators with torsion strips or springs acting in the same manner as torsion strips, e.g. weight oscillating in a horizontal plane
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B17/00—Mechanisms for stabilising frequency
    • G04B17/20—Compensation of mechanisms for stabilising frequency
    • G04B17/28—Compensation of mechanisms for stabilising frequency for the effect of imbalance of the weights, e.g. tourbillon
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C15/00—Clocks driven by synchronous motors
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
    • G04C3/04—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a balance
    • G04C3/06—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a balance using electromagnetic coupling between electric power source and balance
    • G04C3/065—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a balance using electromagnetic coupling between electric power source and balance the balance controlling gear-train by means of static switches, e.g. transistor circuits
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
    • G04C3/14—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means incorporating a stepping motor

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Electric Clocks (AREA)

Abstract

1,167,582. Oscillating motors and generators. GENERAL ELECTRIC CO. 2 Jan., 1967 [21 Jan., 1966], No. 13/67. Heading H2A. [Also in Division G3] In a clock having an electric synchronous driving motor, the speed of the motor is controlled by an electromagnetic mechanical oscillator system comprising a magnetized disc 22 secured for oscillation on a torsion wire 9 and polarized at four peripheral points 25 to 28 spaced at 90 degrees, adjacent points being of opposite polarity whereby torque forces exerted on the member 22 by magnetic fields external to the clock tend to cancel each other. The magnetized disc 22 induces signals in coils (not shown) included in an electrical oscillator circuit from which synchronizing signals are supplied to the rotor of the motor.
GB03/67A 1966-01-21 1967-01-02 Improvements in Electric Synchronous Motor Clocks Expired GB1167582A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US52221966A 1966-01-21 1966-01-21

Publications (1)

Publication Number Publication Date
GB1167582A true GB1167582A (en) 1969-10-15

Family

ID=24079971

Family Applications (1)

Application Number Title Priority Date Filing Date
GB03/67A Expired GB1167582A (en) 1966-01-21 1967-01-02 Improvements in Electric Synchronous Motor Clocks

Country Status (4)

Country Link
US (1) US3497734A (en)
CH (2) CH89167A4 (en)
FR (1) FR1508525A (en)
GB (1) GB1167582A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1513633A (en) * 1975-05-14 1978-06-07 Seiko Koki Kk Motor assembly
US4350908A (en) * 1980-12-04 1982-09-21 Westinghouse Electric Corp. Cooling system for rotor of a dynamoelectric machine
EP2703911B1 (en) * 2012-09-03 2018-04-11 Blancpain SA. Regulating element for watch
EP3757682B1 (en) * 2019-06-26 2022-03-09 The Swatch Group Research and Development Ltd Timepiece movement comprising a magnetic escapement

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2815477A (en) * 1952-08-07 1957-12-03 Kelvin & Hughes Ltd Frequency controlling or indicating devices
US3161813A (en) * 1962-07-30 1964-12-15 Gen Electric Magnetic oscillator controlled motor
CA758698A (en) * 1962-07-30 1967-05-09 L. Dewolf George Electro-mechanical frequency determining system

Also Published As

Publication number Publication date
US3497734A (en) 1970-02-24
DE1673743A1 (en) 1971-01-28
DE1673743B2 (en) 1975-05-28
CH480683A (en) 1969-07-15
FR1508525A (en) 1968-01-05
CH89167A4 (en) 1969-07-15

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee